Thirds to edwin



UNITED STATES PATENT ANDREWV T. BREIVER, OF, MINNEAPOLIS, IN'IINNESOTA,ASSIGNOR OF TWO- THIRDS TO EDWIN C. HOLMES AND .I AMES M. BOYD, JR., OFSAME PLAGE.

SPARK-CATCH ER.

SPECIFICATION forming part of Letters Patent No. 490,242, dated January1'7, 1893.

Application tiled September 6, 1892. Serial No. 445,162. (No modeld Toall whom t may concern:

Be it known that I, ANDREW T. BREWER, of Minneapolis, in the county ofHennepin and State of Minnesota, have invented certain Improvements inSpark-Catchers, of which the following is a specification.

My invention relates to means for intercepting and catching the sparksfrom locomotives, thrashing machine boilers the. thereby preventingtheir escape from the smoke stack and all possible danger of fire in thedistrictsurrounding the location of the boiler.

The object of the invention is to greatly simplify the construction ofspark catchers, to dispense with the screen or sieve ordinarilyemployed, and to provide means in connection therewith whereby sparksafter being caught and cooled may be discharged in a body.

To this end my invention consists in the combination with the upper partof the smokestack provided with an inwardly turned deflector, of a basinor sleeve arranged therein beneath said defiector and provided with avalved bottom arranged to be opened at intervals to discharge the bodyof collected sparks or cinders and further the invention consists invarious details of construction and combinations all as hereinafterdescribed and particularly pointed out in the claims.

The invention will be more readily understood by referenceto theaccompanying drawings, forming a part of this specication, in which:-

Figure l is a vertical sectional elevation of a smoke-stack providedwith a spark catcher embodying'myinvention. Fig. 2 is a detachedelevation of the spark receptacle, showing the bottom thereof open.

As shown in the drawings, the lower part 2 and the enlarged upper part 3of the stack are of the usual construction with the exception that theupper part has the hood-like part 4f inwardly and downwardly curved atthe center to form the contracted exit opening 5 and the angulardedectoror flange 6. Within the stack and supported therein by braces 7is the conical sleeve or receptacle 8 having a large open top occupyinga position just beneath said flange and of greater diameter than conicalparts 9 and 10 attached to the lower 55 end of the sleeve 8 by hinges lland having their upper edges so lapped and formed as to make a tightjoint with the lower end of the part 8 when closed as shown in Fig. 1and in dotted lines in Fig.2. For opening the valve v6o thus forming thebottom of the spark receptacle I provide the flat bar 12 pivoted at itsinner end to the part 9. This handle bar passes through the hole 13 inthe stack and is notched on its lower side so that When forced in it maybe locked by engagement with one shoulder of the opening 13. The part 9closes inside of the part 10 and in order that the latter part may beopened with the former I arrange the studs or lugs la on the upper 7ocorners of the part 9, the same being adapted to operate in the inclinedslots 15 arranged in the overlapping corners of the part 10. Tofacilitate the closing of 9 into 10 I make the inner edges 16 of thefirst straight While the 75 edges 17 of the part 10 are curved. Theopposing edges thus slipping readily one over the other. It will beobserved also that the part 10 is longer than the other so that itslower end lprojects somewhat beneath that of 8o the part 9 when the twoare closed together.

The operation of the device is as follows. The valve or cone-bottom ofthe receptacle being tightly closed, the escape of the smoke upwardthrough the receptacle Sis prevented and the smoke is forced upward inthe narrow channel formed between the stack and the outside of thereceptacle. Arriving at the upper edge of the receptacle the smokepasses into the large annular chamber formed be- 9o neath the hoede andits velocity is decreased so that as the products of combustion passover the receptacle the sparks and heavier particles are deflected andprecipitated into the same fallin g into the bottom thereof While thespark freed smoke passes out through the exit 5. When a considerablebodyof sparks or cinders has collected in the receptacle 8 the steam exhaustbeneath the stack is closed to shut down the draft and the cone valve isroo opened whereupon the sparks drop down into lthe spark box of theboiler.

Having thus described my invention I elairn as new and desire to secureby Letters Patent:-

1. The combination, in a spark Catcher, of the stack provided with theannular deeotor, with an open receptacle arranged beneath saiddeileotor, and a valved-bottoln for said receptacle, consisting ofsemi-conical hinged parts arranged to be opened or closed as described,and for the purpose speeied.

2. The combination with asrnokestaok provided with a defleetor, of aspark receptacle arranged therein beneath said deeotor, and avalved-bottom for said receptacle, consisting of the semi-conical hingedparts pivoted thereto, and having overlapping edges, making the Wholetight When closed, and means for opening and closing said parts,substantially as described and for lthe purpose speciiied.

3. The combination with a stack provided with a defleotor, of a sparkreceptacle arranged therein beneath said deeotor the valvedbottom forsaid receptacle, composed of lthe semi-conical parts 9 and l0 havingoverlapping edges hinged to the lower end of said receptacle, the part10 provided With slots l5` lugs 14 on the part 9 extending into saidslot. the part 9 adapted to close within the part l0 and an operatingbar extendingto the outside of the stack, all substantially asdescribed.

In testimony whereofI have hereunto set inv hand, this 3d day ofSeptember, A. D. 189:?. at Minneapolis, Minnesota.

ANDREW T. BREWER.

In presence of- A. C. PAUL, F. S. LYON.

